AP7347EQ-22FDCWR-7R

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The AP7347EQ-22FDCWR-7R is a fixed-output low-dropout regulator manufactured by Diodes Incorporated, providing a stable 2.2V output with ±1% accuracy. It supports up to 500mA of guaranteed output current within an input voltage range of 1.7V to 5.5V. The device features a 75dB ripple rejection at 1kHz and a low output noise of 60µVrms from 10Hz to 100kHz. It includes a power-good indicator, active output discharge, and operates across a temperature range of -40°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• High output-voltage accuracy maintained at ±1% across the full operating temperature range
• Integrated power-good (PG) open-drain output for supply monitoring and sequencing
• Active output discharge ensures known system startup states when disabled
• AEC-Q100 qualified and PPAP capable for automotive application requirements

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Automotive ADAS load point applications
• Infotainment power supplies
• Automotive RF supplies
• Automotive wireless communication systems
• Cameras

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify that the specific suffix FDCWR corresponds to the U-DFN2020-6 (SWP) Type UXC package variant as documented in the official datasheet ordering information. Confirm the '7R' packing designation matches the required tape and reel quantity. Ensure the component meets AEC-Q100 qualification standards if utilized in automotive production environments requiring specific change control protocols.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component for designs requiring high PSRR and low noise in space-constrained automotive layouts. The U-DFN2020-6 package offers a compact footprint suitable for dense PCB arrangements. Consider the thermal resistance characteristics of the SWP package when calculating power dissipation under maximum load conditions to ensure reliable operation within the specified junction temperature limits.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the AP7347EQ series of 500mA high-PSRR low-noise LDOs designed for noise-sensitive automotive equipment. The series provides both fixed and adjustable output options, utilizing a CMOS process for low quiescent current. It is manufactured in IATF 16949 certified facilities and supports various package types including V-DFN3030-8/SWP for different thermal and spatial requirements.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

AP7347EQ-22FDCW-7R

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the function of the FB/NC pin on the U-DFN2020-6 package?

For the fixed output version using the U-DFN2020-6 package, the FB/NC pin is a No Connect. It is not connected internally but should be connected to GND on the PCB to maximize copper area for thermal dissipation.

How does the Power-Good (PG) pin indicate status?

The PG pin is an open-drain output. It goes into a high-impedance state when VOUT exceeds the PG threshold and is driven low by an internal MOSFET when VOUT drops below the threshold or the device is disabled.